leprushka has asked for the wisdom of the Perl Monks concerning the following question:

Hi, Ive problems with comparing two files (line by line), which either have a different value in one of the column or the whole line is missing. File 1: # KB0001 21 K UWXKKSJ 0.3666 # KB0001 22 K UWXKKSJ 0.4666 # KB0001 23 K UWXKKSJ 0.5666 # KB0001 24 K UWXKKSJ 0.6266 # KB0001 25 K UWXKKSJ 0.7666 # KB0001 26 K UWXKKSJ 0.8666 # KB0001 27 K UWXKKSJ 0.9666 File2: # KB0002 21 K UWXKKSJ 0.3666 # KB0002 22 K UWXKKSJ 0.4666 # KB0002 23 K UWXKKSJ 0.5666 # KB0002 24 K UWXKKSJ 0.6666 # KB0002 25 K UWXKKSJ 0.7666 # KB0002 26 K UWXKKSJ 0.8666 In the output i want to print lines which are not in one of the files or ones that value is different Can anybody help me on this one? Thanks in advance

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Re: comparing 2files
by Bloodnok (Vicar) on Aug 04, 2009 at 12:44 UTC
    Ignoring the format of your post (since it's been mentioned elsewhere), if you are on *NIX, Cygwin or have the UNIX utils installed, diff(1) is most definitely your friend - it can do what you want ... almost by default.

    A user level that continues to overstate my experience :-))
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Re: comparing 2files
by Utilitarian (Vicar) on Aug 04, 2009 at 12:49 UTC
    Take a look @ Text::Diff it provides diff functionality via Perl
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Re: comparing 2files
by jethro (Monsignor) on Aug 04, 2009 at 12:36 UTC
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Re: comparing 2files
by merlponk (Scribe) on Aug 04, 2009 at 14:36 UTC
    If Vim is available, using 
    vim -d <file1> <file2>
    displays the diff quite nicely.
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